CHAUDHARY, SVSSHARMA, GITAM2019-07-232019-07-232019-05http://krishikosh.egranth.ac.in/handle/1/5810116331ABSTRACT The studies on “Genetic evaluation of rose (Rosa hybrida L.) cultivars under mid hill conditions of HP” were carried out at the experimental farm of the Department of Floriculture and Landscape Architecture, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan. The data was taken for four flushes, that is, Flush I (November, 2017), Flush II (April, 2018), Flush III (June, 2018) and Flush IV (August, 2018). The study was planned to evaluate the performance of twelve cultivars of rose with the objectives to find out the nature and magnitude of variation among them, to find out the association among yield and yield contributing traits and to identify promising rose cultivars for future use under mid hill conditions of HP for cut flower as well as for dry flower production. Wide and significant variations for all the parameters were observed among the different rose cultivars. Maximum to moderate variability estimates in terms of GCV and PCV was observed for characters such as number of petals per flower, anthocyanin content, flower bud diameter, weight of cut stem and flower yield. High heritability was observed in flower bud length, flower bud diameter, number of petals per flower, petal length, petal width, flower diameter, anthocyanin content and flower yield. Moderate genetic advance was observed in number of petals per flower. Significant positive genotypic correlations were observed between flower yield and internodal length, leaf width, flower bud length, flower bud diameter, weight of cut stem, vase life, petal length, petal width and flower diameter. Significant positive phenotypic correlations were recorded between flower yield and plant spread, leaf width, flower bud length, flower bud diameter, weight of cut stem, petal length, petal width and flower diameter. Positive direct effect of plant spread, leaf length, leaf width, stem length, stem girth, flower bud diameter, weight of cut stem, vase life, number of petals per flower, petal width and flower diameter on number of flowers per plant revealed the true relationship between them and direct selection for these traits will be rewarding for flower yield.Hollywood, Tineke, Avalanche and Sweet Avalanche were identified as promising rose cultivars for cut flower production as they exhibit good stem and flowering characters as well as stability in performance for maximum number of characters under different environments as revealed by their stability analysis. Taj Mahal was identified as a suitable cultivar for drying in Microwave oven during Flush I (Novemeber, 2017) and Flush II (April, 2018) and Corvette during Flush III (June, 2018) and Flush IV (August, 2018). First Red was found to be suitable cultivar for drying in Hot air oven during Flush I (Novemeber, 2017), Flush III (June, 2018) and Flush IV (August, 2018) and Taj Mahal during Flush II (April, 2018). These cultivars also possess better keeping quality than other cultivars under study.en-USnullThesis